package com.MoCh.InterfaceDemo;

public class Computer {

    public void powerOn() {
        System.out.println("打开笔记本电脑");
    }

    public void powerOff() {
        System.out.println("关闭笔记本电脑");
    }

    public void useDevice(USB usb) {
        usb.openDevice();
        if(usb instanceof Mouse) {
            Mouse mouse1 = (Mouse) usb;
            mouse1.click();
        } else if(usb instanceof KeyBoard) {
            KeyBoard keyBoard1 = (KeyBoard) usb;
            keyBoard1.Input();
        }
        usb.closeDevice();
    }
}
